Speaker



FIG. 1 is a front perspective view of a speaker showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a rear perspective view thereof.

The dashed broken lines in the figures depict portions of the speakerthat form no part of the claimed design.

CLAIM The ornamental design for a speaker, as shown and described.